Converting my guitar amp from power to rechargeable battery power

[fro_zone]

Hi!
Seeking advice on the best way possible to convert my guitar amp from power to rechargeable battery power.
I will state that I am no electrical engineer so I need it explained in the most simplified level (if any) as possible.
Any advice is greatly appreciated!

 

[BobK]

First step is to determine feasibility.

How many Watts?

How long do you need it to run between charges?

How much space and weght can you tolerate for the battery?

Bob